Coexistence of superconductivity and antiferromagnetism in the La{sub 1{minus}x}Pr{sub x}Ba{sub 2}Cu{sub 3}O{sub 7} system
Structural, magnetic, and calorimetric properties are reported for the La{sub 1{minus}x}Pr{sub x}Ba{sub 2}Cu{sub 3}O{sub 7} solid solution. The structure remains orthorhombic with lattice parameter increases from a=0.3872, b=0.3927, and c=1.1709nm for PrBa{sub 2}Cu{sub 3}O{sub 7} to a=0.3903, b=0.3944, and c=1.1801nm for LaBa{sub 2}Cu{sub 3}O{sub 7}. Substitution of Pr for La depresses T{sub c} from 90 to 52 K for La{sub 0.5}Pr{sub 0.5}Ba{sub 2}Cu{sub 3}O{sub 7}, which was reported to be a nonsuperconductor. The Pr antiferromagnetic ordering temperature T{sub N} decreases monotonically from 18 K for PrBa{sub 2}Cu{sub 3}O{sub 7} to 6 K for La{sub 0.8}Pr{sub 0.2}Ba{sub 2}Cu{sub 3}O{sub 7}. Thus there is a large range of coexistence of superconductivity and antiferromagnetism for 0.2{le}x{le}0.5. The superconductivity and anomalous Pr ordering will be discussed with the R{sub 1{minus}x}Pr{sub x}Ba{sub 2}Cu{sub 3}O{sub 7} systems (R=Y, Nd{endash}Lu). {copyright} 2001 American Institute of Physics.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204154
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 89; ISSN 0021-8979
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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